To find the location of cache, some easy math.
April 2019
An aircraft collided with the CBC Tower on April 22, 2001
Subtract from the North coordinates. (A+C)/(0.46D)
Add to the West coordinates. (A+B)/(2D+550)
Where
DR the name and surname of the pilot = A
What was the model of the Cessna = B
DR the location of the transmission tower (2 words) = C
The Frequency Band of operation of the transceivers D = 2100